The Green Journal

Plant Care Articles, Troubleshooting, and Seasonal Guides

By PlantSolve Editorial Team

Read practical plant care notes for repotting, pests, humidity, watering, fertilizer, sunlight, and beginner-friendly routines. Use header search for all 50 journal entries.

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Crawlable, practical articles linked to calculators and plant entities.

12 articles on this page

Close-up of a philodendron stem at soil level showing a soft dark sunken patch on one side of the lower stem while the upper growth remains firm and green

Article · 5 min

Stem Rot in Houseplants: How to Diagnose It, Save the Plant, and Prevent It from Returning

With over 12 years of houseplant pathology diagnostics and more than 1,800 fungal stem infection cases assessed across tropical and subtropical indoor growing environments, we have mapped the precise conditions under which Pythium, Fusarium, and Rhizoctonia colonise houseplant stems — and developed a triage protocol that more than doubles plant survival rates when applied within the first 72 hours of visible symptoms.

Monstera stem cutting showing dark brown stem rot lesion constricting the stem just above soil level in a terracotta pot with healthy green leaves above the damage

Article · 5 min

Stem Rot vs Root Rot in Houseplants

With over 15 years of indoor plant diagnostics and more than 3,000 rot and fungal collapse cases assessed across aroids, succulents, and tropical houseplants, we've built a three-way framework that distinguishes stem rot, root rot, and crown rot by their above-soil presentation alone — so you know within minutes whether rescue is viable and exactly what to do.

Dense, healthy String of Pearls plant with long cascading strands of firm green spherical pearls in a terracotta hanging pot

Article · 5 min

String of Pearls Care Guide: Why Yours Is Dying and How to Fix It

String of pearls is one of the most beautiful and most misunderstood plants we grow. After years of working with them — including rescuing dozens that arrived half-dead — we've identified the two counterintuitive mistakes that account for almost every struggling specimen. This guide exists because most advice online gets the diagnosis completely backwards.

Houseplant with brown crispy leaf tips on a windowsill next to a glass of tap water

Article · 5 min

Tap Water for Houseplants: Which Plants Are Sensitive and What to Use Instead

Most houseplants tolerate tap water without issue — but a specific group of fluoride-sensitive and mineral-sensitive plants develop brown leaf tips, bleached patches, and stunted growth from ordinary municipal water. This guide explains the chemistry, identifies which plants are actually at risk, and gives you the cheapest effective fix for each scenario.

Large potted Thai Constellation Monstera in a bright living room next to a humidifier

Article · 5 min

Thai Constellation Monstera Care Guide: Growing the Variegated Star Plant

Having cultivated and propagated over 100 rare Monsteras over the past 7 years, we have developed a proven method for maximizing the growth and stable variegation of the highly sought-after Thai Constellation Monstera.

Extreme close-up of a monstera leaf showing thrips damage — silvery bronze streaking and scattered black fecal specks across dark green leaf surface

Article · 5 min

Thrips on Houseplants: How to Identify, Treat & Stop an Infestation

With over 12 years diagnosing houseplant pest infestations and tracking treatment outcomes across more than 3,000 diagnostic cases, we have found thrips to be the most persistently misdiagnosed and under-treated pest in indoor collections — and the one most likely to return after growers believe they have won.

A scenic view of a blooming lavender field ready for the summer harvest

Article · 5 min

The Ultimate Guide to Growing Lavender

After cultivating over 10 acres of commercial lavender and testing dozens of varieties in pots over the past decade, we have perfected the precise watering and pruning methods needed to keep your lavender alive and blooming for years.

Before and after photos showing root rescue process on an overwatered Monstera plant

Article · 5 min

Why Your Houseplants Are Dying: The Ultimate Root Rot Rescue Guide

After rescuing thousands of rotting houseplants from big-box stores over a 12-year nursery career, we have developed a foolproof method to diagnose, treat, and completely prevent deadly root rot.

Person using a watering can to water a large indoor Monstera plant in bright early morning sunlight

Article · 5 min

Why Watering Your Plants at Night is Killing Them: Best Watering Practices Guide

After professionally managing thousands of indoor houseplants and outdoor garden beds over the last 10 years, we've identified nighttime watering as the number one preventable cause of fatal fungal diseases.

White fluffy saprophytic mold covering the surface of moist dark potting mix in a terracotta pot with a healthy Pothos trailing beside it

Article · 5 min

White Mold on Houseplant Soil: Causes, Treatment & Prevention

With over 12 years of houseplant disease diagnostics and more than 2,400 soil-pathology cases reviewed across tropical and semi-arid climates, we've mapped every form of white growth that appears on potting mix — and the vast majority of what you're seeing right now is not what you fear.

Whitefly infestation on a hibiscus leaf underside — a circular arc of pale yellow eggs and flat translucent nymph scales clustered along the central vein

Article · 5 min

Whiteflies on Houseplants: How to Identify, Treat & Prevent an Infestation

Across 12 years of diagnosing houseplant pest infestations and reviewing more than 3,000 treatment outcomes, we have found whiteflies to be the pest most consistently undertreated — because spray effort targets the visible flying adults while the sessile, waxy-coated nymph stages feeding on leaf undersides survive every application untouched.

A severely wilted Peace Lily with green leaves draped completely over the edges of a white ceramic pot

Article · 5 min

Wilting Houseplants: How to Tell if It’s Thirsty, Drowning, or Dying

After reviving over 4,000 collapsed and wilting houseplants over the past 12 years, we've found that the biggest mistake growers make is blindly reaching for the watering can. We've developed a diagnostic matrix based on turgor pressure to tell you exactly why your plant collapsed.

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Plant Guide

African Milk Tree

The African Milk Tree is a towering, architectural succulent that looks like a cactus but behaves entirely differently. It is famous for its extreme drought tolerance and its highly toxic white sap.

Plant Guide

African Violet

African Violets are classic indoor bloomers, but their fuzzy leaves demand a unique watering approach. We break down the 'bottom-watering' technique essential for preventing crown rot and triggering year-round flowers.

Plant Guide

Aglaonema

After growing and propagating over 120 Aglaonema specimens across beginner and advanced cultivars in centrally heated homes and low-light interiors over the past 8 years, our team has mastered the precise balance of light, water, and humidity this plant demands — from the dry air of winter radiators to the overwatered pots of summer.

Latest Plant Care Guides

Stem Rot in Houseplants: How to Diagnose It, Save the Plant, and Prevent It from Returning

Stem Rot vs Root Rot in Houseplants

String of Pearls Care Guide: Why Yours Is Dying and How to Fix It

Tap Water for Houseplants: Which Plants Are Sensitive and What to Use Instead

Thai Constellation Monstera Care Guide: Growing the Variegated Star Plant

Thrips on Houseplants: How to Identify, Treat & Stop an Infestation

The Ultimate Guide to Growing Lavender

Why Your Houseplants Are Dying: The Ultimate Root Rot Rescue Guide

Why Watering Your Plants at Night is Killing Them: Best Watering Practices Guide

White Mold on Houseplant Soil: Causes, Treatment & Prevention

Whiteflies on Houseplants: How to Identify, Treat & Prevent an Infestation

Wilting Houseplants: How to Tell if It’s Thirsty, Drowning, or Dying

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Aquarium Plant Fertilizer Dosage Calculator

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African Milk Tree

African Violet

Aglaonema